Simple Circuits - AP Physics C: Electricity and Magnetism
Card 1 of 30
Calculate the voltage: $I = 2\text{A}$, $R = 5\text{Ω}$.
Calculate the voltage: $I = 2\text{A}$, $R = 5\text{Ω}$.
Tap to reveal answer
$V = 10V$. Using Ohm's law: $V = IR = 2 \times 5 = 10\text{V}$.
$V = 10V$. Using Ohm's law: $V = IR = 2 \times 5 = 10\text{V}$.
← Didn't Know|Knew It →
Identify the unit of electric charge.
Identify the unit of electric charge.
Tap to reveal answer
Coulomb ($\text{C}$). Named after Charles-Augustin de Coulomb, fundamental charge unit.
Coulomb ($\text{C}$). Named after Charles-Augustin de Coulomb, fundamental charge unit.
← Didn't Know|Knew It →
Determine power: $R = 8\text{Ω}$, $I = 2\text{A}$.
Determine power: $R = 8\text{Ω}$, $I = 2\text{A}$.
Tap to reveal answer
$P = 32W$. Using $P = I^2R = 2^2 \times 8 = 32\text{W}$.
$P = 32W$. Using $P = I^2R = 2^2 \times 8 = 32\text{W}$.
← Didn't Know|Knew It →
What is the unit of electrical resistance?
What is the unit of electrical resistance?
Tap to reveal answer
Ohm ($\text{Ω}$). Named after Georg Ohm, measures opposition to current flow.
Ohm ($\text{Ω}$). Named after Georg Ohm, measures opposition to current flow.
← Didn't Know|Knew It →
Calculate equivalent resistance: $R_1 = 4\text{Ω}$, $R_2 = 6\text{Ω}$ in series.
Calculate equivalent resistance: $R_1 = 4\text{Ω}$, $R_2 = 6\text{Ω}$ in series.
Tap to reveal answer
$R_{\text{total}} = 10\text{Ω}$. In series: $R_{total} = 4 + 6 = 10\text{Ω}$.
$R_{\text{total}} = 10\text{Ω}$. In series: $R_{total} = 4 + 6 = 10\text{Ω}$.
← Didn't Know|Knew It →
Find the current: $P = 100W$, $V = 10V$.
Find the current: $P = 100W$, $V = 10V$.
Tap to reveal answer
$I = 10A$. Using $I = P/V = 100/10 = 10\text{A}$.
$I = 10A$. Using $I = P/V = 100/10 = 10\text{A}$.
← Didn't Know|Knew It →
Calculate the energy used: $P = 60W$, $t = 2h$.
Calculate the energy used: $P = 60W$, $t = 2h$.
Tap to reveal answer
$E = 432000J$. Convert 2h to 7200s: $E = 60 \times 7200 = 432000\text{J}$.
$E = 432000J$. Convert 2h to 7200s: $E = 60 \times 7200 = 432000\text{J}$.
← Didn't Know|Knew It →
Calculate the current: $V = 9V$, $R = 3\text{Ω}$.
Calculate the current: $V = 9V$, $R = 3\text{Ω}$.
Tap to reveal answer
$I = 3\text{A}$. Using Ohm's law: $I = V/R = 9/3 = 3\text{A}$.
$I = 3\text{A}$. Using Ohm's law: $I = V/R = 9/3 = 3\text{A}$.
← Didn't Know|Knew It →
Identify the equivalent capacitance in parallel $C_1$ and $C_2$.
Identify the equivalent capacitance in parallel $C_1$ and $C_2$.
Tap to reveal answer
$C_{\text{total}} = C_1 + C_2$. In parallel, capacitances simply add together.
$C_{\text{total}} = C_1 + C_2$. In parallel, capacitances simply add together.
← Didn't Know|Knew It →
What is Ohm's Law?
What is Ohm's Law?
Tap to reveal answer
$V = IR$. Fundamental relationship relating voltage, current, and resistance.
$V = IR$. Fundamental relationship relating voltage, current, and resistance.
← Didn't Know|Knew It →
What is the unit of electrical voltage?
What is the unit of electrical voltage?
Tap to reveal answer
Volt ($\text{V}$). Named after Alessandro Volta, measures electric potential difference.
Volt ($\text{V}$). Named after Alessandro Volta, measures electric potential difference.
← Didn't Know|Knew It →
Calculate equivalent resistance: $R_1 = 3\text{Ω}$, $R_2 = 6\text{Ω}$ in parallel.
Calculate equivalent resistance: $R_1 = 3\text{Ω}$, $R_2 = 6\text{Ω}$ in parallel.
Tap to reveal answer
$R_{\text{total}} = 2\text{Ω}$. In parallel: $\frac{1}{R} = \frac{1}{3} + \frac{1}{6} = \frac{1}{2}$, so $R = 2\text{Ω}$.
$R_{\text{total}} = 2\text{Ω}$. In parallel: $\frac{1}{R} = \frac{1}{3} + \frac{1}{6} = \frac{1}{2}$, so $R = 2\text{Ω}$.
← Didn't Know|Knew It →
Calculate the voltage: $I = 2\text{A}$, $R = 5\text{Ω}$.
Calculate the voltage: $I = 2\text{A}$, $R = 5\text{Ω}$.
Tap to reveal answer
$V = 10V$. Using Ohm's law: $V = IR = 2 \times 5 = 10\text{V}$.
$V = 10V$. Using Ohm's law: $V = IR = 2 \times 5 = 10\text{V}$.
← Didn't Know|Knew It →
Calculate power: $V = 12V$, $R = 4\text{Ω}$.
Calculate power: $V = 12V$, $R = 4\text{Ω}$.
Tap to reveal answer
$P = 36W$. Using $P = V^2/R = 12^2/4 = 36\text{W}$.
$P = 36W$. Using $P = V^2/R = 12^2/4 = 36\text{W}$.
← Didn't Know|Knew It →
What is the unit of electrical current?
What is the unit of electrical current?
Tap to reveal answer
Ampere ($\text{A}$). Named after André-Marie Ampère, measures charge flow rate.
Ampere ($\text{A}$). Named after André-Marie Ampère, measures charge flow rate.
← Didn't Know|Knew It →
State the formula for electrical power in a circuit.
State the formula for electrical power in a circuit.
Tap to reveal answer
$P = IV$. Power equals voltage times current in any circuit.
$P = IV$. Power equals voltage times current in any circuit.
← Didn't Know|Knew It →
Determine power: $R = 8\text{Ω}$, $I = 2\text{A}$.
Determine power: $R = 8\text{Ω}$, $I = 2\text{A}$.
Tap to reveal answer
$P = 32W$. Using $P = I^2R = 2^2 \times 8 = 32\text{W}$.
$P = 32W$. Using $P = I^2R = 2^2 \times 8 = 32\text{W}$.
← Didn't Know|Knew It →
What is the formula for the charge on a capacitor?
What is the formula for the charge on a capacitor?
Tap to reveal answer
$Q = CV$. Charge equals capacitance times voltage.
$Q = CV$. Charge equals capacitance times voltage.
← Didn't Know|Knew It →
What is the total resistance in parallel $R_1$ and $R_2$?
What is the total resistance in parallel $R_1$ and $R_2$?
Tap to reveal answer
$\frac{1}{R_{\text{total}}} = \frac{1}{R_1} + \frac{1}{R_2}$. In parallel, reciprocals of resistances add.
$\frac{1}{R_{\text{total}}} = \frac{1}{R_1} + \frac{1}{R_2}$. In parallel, reciprocals of resistances add.
← Didn't Know|Knew It →
What is the relationship between power, current, and resistance?
What is the relationship between power, current, and resistance?
Tap to reveal answer
$P = I^2R$. Alternative power formula using current and resistance.
$P = I^2R$. Alternative power formula using current and resistance.
← Didn't Know|Knew It →
What is the unit of electrical resistance?
What is the unit of electrical resistance?
Tap to reveal answer
Ohm ($\text{Ω}$). Named after Georg Ohm, measures opposition to current flow.
Ohm ($\text{Ω}$). Named after Georg Ohm, measures opposition to current flow.
← Didn't Know|Knew It →
Find the resistance: $P = 200W$, $I = 10A$.
Find the resistance: $P = 200W$, $I = 10A$.
Tap to reveal answer
$R = 2\text{Ω}$. Using $R = P/I^2 = 200/10^2 = 2\text{Ω}$.
$R = 2\text{Ω}$. Using $R = P/I^2 = 200/10^2 = 2\text{Ω}$.
← Didn't Know|Knew It →
Calculate equivalent resistance: $R_1 = 4\text{Ω}$, $R_2 = 6\text{Ω}$ in series.
Calculate equivalent resistance: $R_1 = 4\text{Ω}$, $R_2 = 6\text{Ω}$ in series.
Tap to reveal answer
$R_{\text{total}} = 10\text{Ω}$. In series: $R_{total} = 4 + 6 = 10\text{Ω}$.
$R_{\text{total}} = 10\text{Ω}$. In series: $R_{total} = 4 + 6 = 10\text{Ω}$.
← Didn't Know|Knew It →
Calculate equivalent capacitance: $C_1 = 2\text{F}$, $C_2 = 3\text{F}$ in parallel.
Calculate equivalent capacitance: $C_1 = 2\text{F}$, $C_2 = 3\text{F}$ in parallel.
Tap to reveal answer
$C_{\text{total}} = 5\text{F}$. In parallel: $C_{total} = 2 + 3 = 5\text{F}$.
$C_{\text{total}} = 5\text{F}$. In parallel: $C_{total} = 2 + 3 = 5\text{F}$.
← Didn't Know|Knew It →
What is the formula for electrical energy?
What is the formula for electrical energy?
Tap to reveal answer
$E = P \times t$. Energy equals power multiplied by time.
$E = P \times t$. Energy equals power multiplied by time.
← Didn't Know|Knew It →
Identify the unit of electric charge.
Identify the unit of electric charge.
Tap to reveal answer
Coulomb ($\text{C}$). Named after Charles-Augustin de Coulomb, fundamental charge unit.
Coulomb ($\text{C}$). Named after Charles-Augustin de Coulomb, fundamental charge unit.
← Didn't Know|Knew It →
What is the formula for voltage in terms of work and charge?
What is the formula for voltage in terms of work and charge?
Tap to reveal answer
$V = \frac{W}{Q}$. Voltage is work per unit charge.
$V = \frac{W}{Q}$. Voltage is work per unit charge.
← Didn't Know|Knew It →
Calculate the voltage: $W = 30J$, $Q = 5C$.
Calculate the voltage: $W = 30J$, $Q = 5C$.
Tap to reveal answer
$V = 6V$. Using $V = W/Q = 30/5 = 6\text{V}$.
$V = 6V$. Using $V = W/Q = 30/5 = 6\text{V}$.
← Didn't Know|Knew It →
What is the formula for the drift velocity of electrons?
What is the formula for the drift velocity of electrons?
Tap to reveal answer
$v_d = \frac{I}{nqA}$. Average velocity of charge carriers in conductor.
$v_d = \frac{I}{nqA}$. Average velocity of charge carriers in conductor.
← Didn't Know|Knew It →
Find the current: $P = 100W$, $V = 10V$.
Find the current: $P = 100W$, $V = 10V$.
Tap to reveal answer
$I = 10A$. Using $I = P/V = 100/10 = 10\text{A}$.
$I = 10A$. Using $I = P/V = 100/10 = 10\text{A}$.
← Didn't Know|Knew It →